Hi all,my first post , thanks for allowing me on your fantastic and very helpful forum for R/E,
Has anyone here tried the polycarbonate double or triple wall roofing sheet as a form of solar water heating,it occurred to me one day that perhaps this would be ideal as a heat exchanger,with the underside painted black,and some form of manifold ie such as split plastic drain pipe on each end,sealed with sikaflex or something similar,it is relatively cheap in my opinion to enable them to be as long as feasibly possible,or shorter and used in tandem,